Effect of CeO2–GO Nanocomposite on the Anticorrosion Properties of Epoxy Coating in Simulated Acid Rain Solution

Abstract

The lamellar structure of graphene oxide and the filling effect of nano-cerium oxide particles together provide a good barrier and stability to coating. In this paper, cerium oxide-graphene oxide (4:1) nanocomposite was prepared by the hydrothermal synthesis method. The effect of cerium oxide–graphene oxide (4:1) nanocomposite on the anticorrosion properties of epoxy coating in simulated acid rain solution was studied by open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), Mott–Schottky curve, Tafel curve, and micromorphological characterization, in order to compare it with pure epoxy coating, graphene oxide epoxy coating, and cerium oxide epoxy coating. The obtained results showed that cerium oxide–graphene oxide (4:1) epoxy coating’s protection efficiency was as high as 98.62%. These results indicated that cerium oxide–graphene oxide modified anticorrosive coating had an excellent application prospect in an acid rain environment. Meanwhile, owing to the poor protection ability of epoxy resin and unstably hydrolysis product of CeO2 to the acidic medium, the resistance of CeO2–GO (4:1)/EP coating to acidic corrosive medium was relatively poorer than that of neutral and saline-alkali corrosive medium.

Enhanced Anti‐Corrosion Performance of Carbon Steels via CeO2@BNNSs/Epoxy Resin Composite Coatings

“…can help to enhance their anti-corrosion properties and stability. [34,35] However, surface modification is difficult due to the strong chemical inertness of h-BN and the lack of functional groups on the surface. [36] Polydopamine (PDA) is reported to have superb adhesion and can adhere to the surface of almost all organic and inorganic substrates, [37,38] and its use in the modification of BNNSs can enhance their compatibility with the substrate.…”

Corrosion Resistance of CeO2-GO/Epoxy Nanocomposite Coating in Simulated Seawater and Concrete Pore Solutions

“…According to our previous research, cerium oxide-modified graphene oxide nanocomposites (CeO 2 :GO (4:1)) prepared by hydrothermal synthesis [ 35 ] had excellent corrosion resistance in simulated seawater, simulated saline-alkali, and simulated acid rain environments [ 36 ]. Marine construction represented by reinforced concrete structures are subject to serious corrosion risks, and the aim of this paper is to further investigate the corrosion performance and mechanical properties of CeO 2 -GO/EP nanocomposite coatings in simulated seawater and simulated concrete pore liquid composite solutions.…”

Flower-like Superhydrophobic Surfaces Fabricated on Stainless Steel as a Barrier against Corrosion in Simulated Acid Rain

“…Most of the protection is in the direction of protective coatings, paints, smart coatings, self-repairing coatings, protective films formed by adsorption processes, functional surfaces (different types of hydrophobic and superhydrophobic surfaces), etc. [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. The “green orientation” and the increasingly strict European Directives to use only non-hazardous substances for the formation of protective coatings have given further impetus to research in this field.…”